fp420 low and high voltage supply [email protected] infn/univ. of torino [email protected]...
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FP420Low and high voltage supply
INFN/Univ. of Torino
Sep. 2007
HV-LV supply segmentation
Damage depends on distance from the beam. Required bias voltage and current increase with radiation dose.
Drawing: From Ray Thompson
PT1000 Temperature sensor?
Pixels:50x400um and 400x50um
MCC: Module Controller Chip
1 Superlayer =
2 Hybrids/Blades4 detectors 2D1 MCC1 Read-out interface
HV+LV and temperature channel count
HV: 0 to -100VLV: 1.6V,2.0V
One Superlayer One pocket One station Fp420 experiment
4 det.+ FE+1MCC
with 5 Superlayers with 3 pockets with 4 stations
Low voltage 2 10 30 120
High voltage 2 10 30 120
Si detectorTemperature
monitor channels
One Superlayer One pocket One station Fp420 experiment
With one probe with 5 Superlayers with 3 pockets with 4 stations
Temperature 1 5 15 60
Gastof and Quartic channel count and level????
Commercial: CaenWiener is similar
Cryostat 2
LHC tunnel
EASY 3000 A3486
2x48V
Power
A3009
12ch
LV
A3009
12ch
LV
A3009
12ch
LV
A3009
12ch
LV
A3009
12ch
LV
A3009
A3501
A3801
EASY 3000
A3501
12ch
HV
A3540
A3006
FP420
FP420
FP420
10m
QuarticGastof
CMS and Atlas counting room
SY1527A1676A
Crate Ctl
A1676A
Crate Ctl
Atlas / CMS
Slow control
500m 500m500m
Cryostat 1
LHC tunnel
EASY 3000 A3486
2x48V
Power
A3009
12ch
LV
A3009
12ch
LV
A3009
12ch
LV
A3009
12ch
LV
A3009
12ch
LV
A3009
A3501
A3801
EASY 3000
A3501
12ch
HV
A3540
A3006
FP420
FP420
FP420
10m
QuarticGastof
CAEN: EASY3000 crate, 3 pockets Silicon detector+Quartic+Gastof
A3009: LV A3501: HVA3801:TempMon
A3540, HV A3006, LV
Spare:
14 Slots
A3486: 2 x 48V
Gastof/Quartic crate
Silicon tracker
Wiener solution
Also proposed an all-in-tunnel solution which however needs hardware modifications and radiation tests
Radiation tests required
CAEN, EASY3000 modules, Radiation status
Module CAEN
Function Used by
Tested ok to References
Low Voltage
Atlas RPC, LVL1, CMS
Certified for Atlas (1)
140Gy or 2x1011 p/cm2 By CERN POOL. See link below
Agostino Lanza, Anghinolfi and Fontaine
A3009
http://lhcb-muon.web.cern.ch/lhcb-muon/electronics/Irad-Uppsala.pdf (non conclusive) 2 x 48V base Power
Atlas RPC, LVL1, CMS
Certified for Atlas (1)
140Gy or 2x1011 p/cm2 By CERN POOL
Agostino Lanza (INFN Pavia)
A3486
http://lhcb-muon.web.cern.ch/lhcb-muon/electronics/Irad-Uppsala.pdf (non conclusive) http://lhcb-muon.web.cern.ch/lhcb-muon/electronics/HV_TB_04.06.pdf
A3501
-100V bias
Not certified. But equivalent to A3540 below
Has not been tested.
4kV Certified for Atlas See links below Agostino Lanza A3540
http://www.pv.infn.it/~servel/atlas/hv/hv_sys/casaccia_report.ppt (60Co) http://www.pv.infn.it/~servel/atlas/hv/hv_sys/index.html (proton, 159MeV) http://lhcb-muon.web.cern.ch/lhcb-muon/electronics/HV_TB_04.06.pdf 128ch ADC
? 147Gy (proton)
A. Lanza, G. Iuvino, G. Passuello
A3801
http://www.pv.infn.it/~servel/atlas/hv/hv_sys/tsl-report_jan-2006.ppt (proton, 159MeV) A3006 4-16V ? ?
Rad test facilities
• SEU (Single event upset): (Proton)– TSL proton beam at Uppsala in Sweden which has a
diameter of 15 to 20cm
• NIEL (Non Ionising Energy Loss) : (neutron)– PROSPERO nuclear reactor at Valduc near Dijon in
France which produces neutrons at 1Mev energy
• TID (Total Ionising dose): (Gamma)– cobalt 60 source in Cassacia in Italy near rome
• ….
CAEN: Can bus test over 520m
need to add those bias resistors, to improve noise margin
CAN bus collision error
Example of collision. B end is transmitting, then A suddenly starts transmitting as well (upper trace) => collision and broken communciation.
=A transmitted data
=A received data
=B end cable signal
B sends
A sends
Conclusions on communication cable test
• With CAEN’s implementation, of 250kbaud, timing violations are detected : Need either 125kbaud or modify timing of can bus = modification can only be done by CAEN (20k€)
• Cable bandwidth SCEM 04.21.52.xxx.x allows 1Mbaud
• Clock transmission has been tested to work with a duty cycle distortion of <10% at 1MHz
• This family of cables would support the CAN bus communication at 125kBaud over 500m using the standard CAN aribtration and protocol.
• EASY3000 crate may catch fire!
Status Sep. 2007• CAEN solution is at the most advanced state:
• Will fit into the tunnel in 3(4) crates includes: – Temperature monitor
– Quartic/Gastof supplies (=1 crate)
– Very few long cables: Power 400V+communication+48V
– May need 400V noise filter A3000NF (ask Detlef for <200W). This module has not been rad. tested but its an entirely passive components. Could be outside of tunnel!
• Wiener supply solution: – LV in tunnel. HV in Counting room. But also a all-in-tunnel version
– Temperature in counting room
• HV 100V(ok?) module A3501 has not been radition tested. Equivalent to A3540 (12x4KV) which is approved for Atlas
Conclusion on power supplies
• Both CAEN and Wiener are still candidates
• Wiener and CAEN need radiation tests
• CAEN need customization on communication
• Wiener need customization on HV in their all-in-tunnel solution
Actions
• Specify radiation requirements and test protocol for Wiener (and for CAEN)
• Find locations for above radiation qualification tests for Wiener and for CAEN
• Radiation test CAEN HV 3501(Si bias) and A3006 (4-16V Gastof /Quartic)